Fatty, filling bean dishes?

My fiance and I are on an extremely limited food budget (we live off $100/month each for food, which I stretch significantly and can make into a well-rounded diet, but it's hard). I want to make more of our dishes based on non-meat sources, because meat is expensive and we could afford a lot more fresh vegetables and fruits if we could. However, he is allergic to eggs (he can have them in small quantities mixed with other things, but not as a main protein source) and nuts (violently), and we cannot afford really nice cheeses, just simple cheddar and other cheap ones and pre-shredded packed cheeses. This leaves beans. We love curries, so I tried a lot of bean curries, but he has an extremely fast metabolism and they don't fill him up, and he has a crash later on when he's starving and nothing helps. I've also tried things like bean burritos and Spanish rice, with some success, but while he'll eat it he will tend to crash without some kind of cheese as well. My best luck has been dishes that incorporate milk, sour cream, cheese, or yogurt-- some kind of animal protein-- or beef or chicken stock. He really needs some fat EVERY meal-- his metabolism is so fast and he needs to gain about 20 lbs.

So I need ideas for bean dishes that-don't mean a lot of new spices-- I have common spices and curry spices like cumin, turmeric, ginger, chili, and coriander-are fatty but nutritious, not just beans and cheese or something-- we need a significant bang for our buck-taste good, and aren't bland-contain inexpensive ingredients for the NE area in winter

I will add that while skill is not a limitation (I can cook almost anything correctly from a recipe and adjust as needed for my available tools) ingredients and time definitely are. I don't have hours and hours to cook, I have to work. Of course, he can cook easy things (he has basic skills, but struggles with many steps and complicated techniques) so "mix together and leave in a crock pot/stove-pot and stir" recipes are okay for him to cook as well.

I just can't find ANYTHING about high-fat foods these days! It's all low-fat. I've been using my grandmother's ancient cookbook because in the 1940s getting enough fat was actually a concern!

try oatmeal cookies. plenty of butter, mind. And go sign up at costco. 2ppl here, living on around $100 a month, and their prices on mozarella and big cans of beans can't be beat. If he's still hungry, try more oatmeal cookies. they're great for workdays.

No Costco here but we have a BJ's membership. Quality isn't as good but it saves us a lot-- unfortunately our fridge isn't good enough to buy things that require refridgeration in bulk. But they don't have the big bean cans-- I buy dried beans in bags at a local Asian grocery.